Výsledky vyhledávání - "Carlos R. Castro-Pareja"

FPGA-based real-time 3D image preprocessing for image-guided medical interventions

Autor: Carlos R. Castro-Pareja, Omkar Dandekar, Raj Shekhar

Publikováno v: Journal of Real-Time Image Processing. 1:285-301

Minimally invasive image-guided interventions (IGIs) are time and cost efficient, minimize unintended damage to healthy tissue, and lead to faster patient recovery. One emerging trend in IGI workflow is to use volumetric imaging modalities such as lo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::925b93f1667350100c022ab17d68c362
https://doi.org/10.1007/s11554-007-0028-y

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Direct aperture deformation: An interfraction image guidance strategy

Autor: Carlos R. Castro-Pareja, Yuanming Feng, Raj Shekhar, Cedric X. Yu

Publikováno v: Medical Physics. 33:4490-4498

A new scheme, called direct aperture deformation (DAD), for online correction of interfraction geometric uncertainties under volumetric imaging guidance is presented. Using deformable image registration, the three-dimensional geometric transformation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::56d8503901ebbc59cbb3dd9618e2dbd5
https://doi.org/10.1118/1.2374675

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Registration-assisted segmentation of real-time 3-D echocardiographic data using deformable models

Autor: Raj Shekhar, Jong-Min Song, Carlos R. Castro-Pareja, Vivek Walimbe, Jian Xin Qin, Vladimir Zagrodsky

Publikováno v: IEEE Transactions on Medical Imaging. 24:1089-1099

Real-time three-dimensional (3-D) echocardiography is a new imaging modality that presents the unique opportunity to visualize the complex 3-D shape and motion of the left ventricle (LV) in vivo and to measure the associated global and local function

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::649758d476747cb3f1826116bce9c68f
https://doi.org/10.1109/tmi.2005.852057

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Automated prostate localization in external-beam radiotherapy using mutual information-based registration of treatment planning CT and daily 3D ultrasound images

Autor: Raj Shekhar, Carlos R. Castro-Pareja, Vladimir Zagrodsky, Lionel G. Bouchet

Publikováno v: International Congress Series. 1281:435-440

The accuracy of mutual information-based registration for automatic alignment of planning CT and daily 3D ultrasound images is evaluated. The results show the importance of preprocessing both the CT and the daily 3D ultrasound images to maximize regi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::477ea227de8c9521171d6fc3139a1a3b
https://doi.org/10.1016/j.ics.2005.03.115

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Hardware Acceleration of Mutual Information-Based 3D Image Registration

Autor: Carlos R. Castro-Pareja, Raj Shekhar

Publikováno v: Journal of Imaging Science and Technology. 49:105-113

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8347917e907d79a2193183911cd3645
https://doi.org/10.2352/j.imagingsci.technol.2005.49.2.art00002

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High-Speed Registration of Three- and Four-dimensional Medical Images by Using Voxel Similarity

Autor: Carlos R. Castro-Pareja, Jogikal M. Jagadeesh, Vivek Walimbe, Vladimir Zagrodsky, Raj Shekhar

Publikováno v: RadioGraphics. 23:1673-1681

A generalized, accurate, automatic, retrospective method of image registration for three-dimensional images has been developed. The method is based on mutual information, a specific measure of voxel similarity, and is applicable to a wide range of im

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8852ba77cef1111e7aab7eb8416b8ff
https://doi.org/10.1148/rg.236035041

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Automatic segmentation of phase-correlated CT scans through nonrigid image registration using geometrically regularized free-form deformation

Autor: Raj, Shekhar, Peng, Lei, Carlos R, Castro-Pareja, William L, Plishker, Warren D, D'Souza

Publikováno v: Medical physics. 34(7)

Conventional radiotherapy is planned using free-breathing computed tomography (CT), ignoring the motion and deformation of the anatomy from respiration. New breath-hold-synchronized, gated, and four-dimensional (4D) CT acquisition strategies are enab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::156f93b2e0227514941aff6bd673f2d4
https://pubmed.ncbi.nlm.nih.gov/17822013

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Physically correct mesh manipulation in multi-level free-form deformation-based nonrigid registration

Autor: R. Shekhar, Carlos R. Castro-Pareja

Publikováno v: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference. 2004

We present a new solution to prevent mesh folding artifacts common in free-form deformation-based nonrigid registration. Our algorithm imposes linear bounds on the search space of control point locations, thereby enabling the use of constrained optim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f1deb8c1488642d8ae643d4593ecec0
https://pubmed.ncbi.nlm.nih.gov/17272028

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A scalable beamforming architecture for real-time 3D ultrasonic imaging using nonuniform sampling

Autor: Raj Shekhar, Carlos R. Castro-Pareja, Omkar Dandekar

Publikováno v: SPIE Proceedings.

Real-time acquisition of 3D volumes is an emerging trend in medical imaging. True real-time 3D ultrasonic imaging is particularly valuable for echocardiography and trauma imaging as well as an intraoperative imaging technique for surgical navigation.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cad58daf06fca27bf712ca1e0a758bc0
https://doi.org/10.1117/12.653714

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